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为研究自制Co-Fe/Zr O2-Si O2复合催化剂的反应动力学特性,进行了Co-Fe复合催化剂的F-T合成反应,建立了一定温度、压力、空速和H2/CO范围内,固定床积分反应器内的F-T合成反应的动力学模型,求出Co-Fe复合催化剂上F-T合成反应的动力学模型参数。结果表明,反应为1.5级反应,该模型的计算值与试验值符合较好,可较准确预测合成气在催化剂床层的停留时间和CO转化率(误差小于±20%)。在试验温度范围内,Co-Fe复合催化剂的F-T合成反应活化能为157k J/mol,相对较高,说明催化剂对温度的变化反应较为敏感。
In order to study the reaction kinetics of self-made Co-Fe / Zr O2-Si O2 composite catalysts, the FT synthesis reaction of Co-Fe composite catalysts was carried out. The reaction conditions of temperature, pressure, space velocity and H2 / The kinetic model of the FT synthesis reaction in the integral reactor was obtained and the kinetic model parameters of the FT synthesis reaction on the Co-Fe composite catalyst were obtained. The results show that the reaction is a 1.5-order reaction. The calculated value of the model is in good agreement with the experimental data. The residence time and CO conversion of the synthesis gas in the catalyst bed can be more accurately predicted (less than ± 20% error). In the experimental temperature range, the activation energy of F-T synthesis reaction of Co-Fe composite catalyst is 157k J / mol, which is relatively high, indicating that the catalyst is sensitive to the change of temperature.